Programming languages

Haskell

Haskell is a standardized, general-purpose purely functional programming language, with non-strict semantics and strong static typing. It is named after logician Haskell Curry. The language is known for enabling concise and expressive code, and it's widely used in academia and industry for teaching, research, and commercial application development. Haskell's rich type system and emphasis on immutability and side-effect-free programming support the development of robust, maintainable, and efficient software.

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Created by
Lennart Augustsson , Dave Barton , Brian Boutel , Warren Burton , Joseph Fasel , Kevin Hammond , Ralf Hinze , Paul Hudak , John Hughes , Thomas Johnsson , Mark Jones , John Launchbury , Erik Meijer , John Peterson , Alastair Reid , Colin Runciman , Philip Wadler
First appeared
1990
Official resource
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Your first program

Hello, World!

Haskell
main = putStrLn "Hello, World!"

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Teach me the basics of Haskell. Use https://code.study/haskell as the starting point. Explain what Haskell is best suited for, when I should not choose it, how to install or try it, and then walk me through its Hello World example step by step.

Content reviewed August 2026 · Start with primary sources and verify version-specific details.